Q: What are the prime factors of the number 355,312,352?

 A: 2, 157, 197, 359

Why are those the prime factors of the number 355,312,352?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 355,312,352

355,312,352
Factor Arrows
2177,656,176
Factor Arrows
288,828,088
Factor Arrows
244,414,044
Factor Arrows
222,207,022
Factor Arrows
211,103,511
Factor Arrows
15770,723
Factor Arrows
197359

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 157, 197, 359

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 157 x 197 x 359 = 355,312,352

This can also be written as 25 x 1571 x 1971 x 3591 = 355,312,352

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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